CPC Main Group
B41J 3/00 Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
15 direct subcodes
Child Classifications
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- B41J 3/01 for special character, e.g. for Chinese characters or barcodes
- B41J 3/24 for perforating or stencil cutting using special types or dies
- B41J 3/26 for stenographic writing
- B41J 3/28 for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
- B41J 3/30 for printing with large type, e.g. on bulletins, tickets
- B41J 3/32 for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
- B41J 3/34 for printing musical scores
- B41J 3/36 for portability
- B41J 3/38 for embossing, e.g. for making matrices for stereotypes
- B41J 3/407 for marking on special material
- B41J 3/42 Two or more complete typewriters coupled for simultaneous operation
- B41J 3/44 Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
- B41J 3/54 with two or more sets of type or printing elements (B41J3/60 takes precedence)
- B41J 3/60 for printing on both faces of the printing material
- B41J 3/62 for printing on two or more separate sheets or strips of printing material (B41J3/54 takes precedence)
Top Applicants
Top 10 applicants by patent filingsfor class B41, 2013–2023, worldwide · Source: EPO PATSTAT
- SEIKO EPSON CORPORATION 8,446
- SEIKO EPSON CORPORATION JP 8,438
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,828
- CANON JP 5,419
- CANON 4,156
- BROTHER INDUSTRIES JP 3,763
- BROTHER INDUSTRIES 2,779
- RICOH COMPANY JP 2,717
- FUJIFILM JP 2,423
- RICOH COMPANY 1,739